Michael Patrick "Mike" O'Leary (February 5, 1892 – September 12, 1954) was a Canadian professional ice hockey player.

He played with the Toronto Blueshirts of the National Hockey Association,[1] the Halifax Socials of the Maritime Professional Hockey Association, and the Victoria Aristocrats of the Pacific Coast Hockey Association.

He died after an illness at his Ottawa home in 1954.

[2] During the 1919–20 season O'Leary played centre for the Calgary Wanderers of the Big-4 League in Alberta.

[3] Mickey O'Leary's older brother Eddie was a longtime referee in the National Hockey League.